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Composite wave-absorbing material with wide frequency bands

A wave-absorbing material and broadband technology, applied in the field of frequency selective surface, can solve the problems of large volume, weight and cost, unstable wave-absorbing performance, difficulty in absorbing radar waves, etc., achieving simple structure, good wave-absorbing effect, Flexible selection of effects

Inactive Publication Date: 2014-01-01
XIDIAN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the volume, weight and cost of existing wave-absorbing materials are large, and the wave-absorbing performance will be affected by the error of coating and become unstable, and the wave-absorbing frequency band generally does not exceed 40%, so that it can be used in a wide frequency range. good absorption of threat radar waves is extremely difficult

Method used

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  • Composite wave-absorbing material with wide frequency bands
  • Composite wave-absorbing material with wide frequency bands
  • Composite wave-absorbing material with wide frequency bands

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection of the present invention The scope is not limited to the examples described below.

[0021] Such as figure 1 , figure 2 As shown, the present invention is a composite broadband absorbing material, including a floor 1, a dielectric plate 2, a frequency selective surface 3 and a matrix absorbing material layer 4, the floor 1 is arranged on the lower surface of the dielectric plate 2, The frequency selective surface 3 is arranged on the upper surface of the dielectric plate 2, the base absorbing material layer 4 is coated on the frequency selective surface 3, and the frequency selective surface 3 is provided with several passive resonant units, The p...

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Abstract

The invention discloses a composite wave-absorbing material with wide frequency bands. The wave-absorbing material comprises a floor slab, dielectric slab, a frequency selection surface and a matrix wave-absorbing material layer, wherein the floor slab is arranged at the lower surface of the dielectric slab; the frequency selection surface is arranged on the upper surface of the dielectric slab; the matrix wave-absorbing material layer is applied onto the frequency selection surface; the frequency selection surface is provided with a plurality of passive resonance units; each passive resonance unit is in a Jerusalem cross hole-shaped structure; the plurality of passive resonance units are cyclically arranged to form the frequency selection surface with holes, and an RLC (Radio Link Control) parallel circuit is formed. The composite wave-absorbing material can achieve the reduction of radar cross sections within a wide frequency band range, and has the advantages of being simple in structure, excellent in stability and easy to realize.

Description

technical field [0001] The invention relates to the technical field of frequency-selective surfaces in wave-absorbing materials, in particular to a composite broadband wave-absorbing material for absorbing electromagnetic waves, reducing radar scattering cross sections, and realizing electromagnetic stealth of targets. Background technique [0002] The research on electromagnetic stealth technology for the purpose of controlling target RCS has a long history. There are four main control methods for ordinary target RCS, namely: shaping technology, coating absorbing material, passive cancellation and active cancellation technology. Among them, shaping technology and coating absorbing material are the two most commonly used and most effective methods. Coating absorbing materials is the earliest application in the military field to realize the main means of stealth of weapon systems or their radars. With the rapid development of detection technology, stealth technology has beco...

Claims

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Application Information

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IPC IPC(8): H01Q17/00
Inventor 王夫蔚洪涛吕洁姜文龚书喜张帅
Owner XIDIAN UNIV
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